Intelligent beam scanning method for cellular-free sensing integrated system

The invention discloses an intelligent beam scanning method for a cellular-free sensing integrated system, and the method comprises the steps: enabling a predefined codebook of a receiving and transmitting base station to serve as a decision set, and enabling an optimal beam precoding matrix to serve as a corresponding decision variable; converting a target sensing problem into a hypothesis testing problem by receiving echo information in a base station; establishing test statistics corresponding to target perception, and determining a judgment function expression and a corresponding detection probability; modeling beam scanning into a Markov decision process by recording a corresponding relation between code word selection and detection success; searching an optimal strategy for maximizing the accumulated reward by utilizing a Q learning algorithm; and solving by using a deep Q network algorithm (DQN) to obtain a beam scanning strategy adapted to the current environment. According to the method, the radar ca